Discuss the status of African-Americans in North America in the years 1650, 1790, and 1840. Which one of these eras provided African-Americans with the most liberty and autonomy, and which provided the least?

Compare and contrast the status of African-Americans in North America in the years 1650, 1790, and 1840. Which one of these eras provided African-Americans with the most liberty and autonomy, and which provided the least?